General information
Engine type - V8
Working volume:
- LM7, L59 - 5.3 L
- LGM, LY5, LC9 - 5.3 l
- LQ9, LQ4, L76, LY6 - 6.0 L
- L92 - 6.2 l
Cylinder diameter:
- L59, LM7 - 96.00-96.018mm
- L.Q4, LQ9 - 101.618-101.636 mm
- LGM, LY5, LC9 - 96.00-96.02 mm
- L76, LY6 - 101.62-101.64mm
- L92 - 103.24-103.26 mm
Piston stroke - 92 mm
Compression ratio:
- LGM, LY5, LC9 — 9,95
- L76, LY6 — 9,67
- LQ9 — 10,1
- LQ4 — 9,41
- LM7, L59 — 9,49
- L92 — 10,5
Operating procedure:
- in the V8 scheme - 1-8-7-2-6-5-4-3
- in the V4 scheme - 1-4-6-7
The gap between the electrodes of the spark plug - 1.02 mm
Cylinder block
Camshaft bearing seat diameter:
- LQ9, LQ4, LM7, L59:
- necks No. 1 and No. 5 - 59.62-59.67 mm
- necks No. 2 and No. 4 - 59.12-59.17 mm
- neck No. 3 - 58.62-58.67 mm
- L76, LY6, LGM, LY5, LC9, L92:
- necks No. 1 and No. 5 - 59.58-59.63 mm
- necks No. 2 and No. 4 - 59.08-59.13 mm
- neck No. 3 - 58.58-58.63 mm
Main bearing bed diameter - 69.87-69.89 mm
Misalignment of the beds of main bearings - 0.006 mm
Cylinder diameter:
- L59, LM7 - 96.00-96.018mm
- LGM, LY5, LC9 - 96.00-96.02 mm
- LQ9, LQ4 - 101.62-101.64mm
- L76, LY6 - 101.62-101.64mm
- L92 - 103.24-103.26 mm
Block height (from the axis of the crankshaft to the mating plane of the block head) - 234.57-234.82 mm
Warping of the mating plane:
- on a length of 150 mm - 0.11 mm
- along the length of the block - 0.22 mm
Pusher guide diameter - 21.42-21.44 mm
Camshaft
Axial clearance - 0.025-0.305 mm
Shaft journal diameter - 54.99-55.04 mm
Neck ovality - 0.025 mm
Cam profile lift:
- release (without turning off the cylinders):
- L59, LM7 - 6.96 mm
- LGM, LY5, LC9 - 7.20mm
- L76 - 7.17 mm
- LQ9, LQ4, LY6 - 7.13mm
- L92 - 7.48 mm
- release (with cylinder deactivation):
- LGM, LY5, LC9 - 7.33mm
- L76 - 7.17 mm
- L92 - 7.61 mm
- inlet (without turning off the cylinders):
- L59, LM7 - 6.82mm
- LGM, LY5, LC9 - 7.2 mm
- L76 - 7.08 mm
- LQ9, LQ4, LY6 - 6.96 mm
- L92 - 7.48 mm
- inlet (with cylinder deactivation):
- LGM, LY5, LC9 - 7.33mm
- L76 - 7.20 mm
- L92 - 7.61 mm
Shaft deflection (along the middle neck) - 0.05 mm
Connecting rod
Bearing clearance:
- nominal - 0.023-0.065 mm
- limit - 0.076 mm
Large head diameter - 56.51-56.53 mm
The ovality of the large head is 0.004-0.008 mm
Side clearance - 0.11-0.51 mm
Crankshaft
Crankpin Diameter:
- nominal - 53.32-53.34 mm
- limit - 53.31 mm
Crankpin ovality:
- nominal - 0.005 mm
- limit - 0.01 mm
Taper of the crankpin (1/2 neck length):
- nominal - 0.005 mm
- limit - 0.02 mm
Axial clearance - 0.04-0.2 mm
Main bearing clearance:
- nominal - 0.02-0.05 mm
- limit - 0.065 mm
Main journal diameter:
- nominal - 64.99-65.01 mm
- limit - 64.99 mm
Ovality of the main neck:
- nominal - 0.003 mm
- limit - 0.008 mm
Main journal taper:
- nominal - 0.01 mm
- limit - 0.02 mm
Back flange runout - 0.05 mm
Synchronizing ring beat (measure 1 mm below the tooth root diameter) - 0.7 mm
Neck width for thrust bearing:
- nominal - 26.14-26.22 mm
- limit - 26.22 mm
Runout of the surface under the thrust bearing - 0.025 mm
Cylinder head
Head height (from the firing bottom to the plane of the valve cover) - 120.2 mm
Valve guide installation height (measured from the spring seat) - 17.32 mm
Warping of the mating plane:
- exhaust manifold - 0.13 mm
- intake manifold - 0.08 mm
- block
- on a length of 150 mm - 0.08 mm
- along the entire length - 0.1 mm
Intake manifold
Flange warping (on a length of 200 mm, including two windows of inlet channels) - 0.3 mm
Piston and piston pin
Piston pin diameter - 23.952-23.955 mm
Piston boss clearance:
- nominal - 0.002-0.01 mm
- limit - 0.015 mm
Clearance in the small head of the connecting rod:
- nominal - 0.007-0.02 mm
- limit - 0.022 mm
Piston diameter (43 mm from the piston head):
- L59, LM7, LGM, LY5, LC9 - 96.002-96.036 mm
- LQ4 - 101.606-101.640 mm
- LQ9, L76, LY6 - 101.611-101.642 mm
- L92 - 103.23-103.26mm
Clearance in the cylinder:
- LQ4:
- nominal - 0.022-0.030 mm
- limit - 0.07 mm
- LQ9:
- nominal - 0.022-0.030 mm
- limit - 0.08 mm
- L59, LM7, LGM, LY5, LC9, L92:
- nominal - 0.036-0.016 mm
- limit - 0.071 mm
- L76, LY6:
- nominal - 0.022-0.08 mm
- limit - 0.08 mm
Piston rings
Lock gap:
- first compression:
- LQ9, LQ4:
- nominal - 0.31-0.52 mm
- limit - 0.59 mm
- L59, LM7, LGM, LY5, LC9, L92:
- nominal - 0.23-0.44 mm
- limit - 0.5 mm
- L76, LY6:
- nominal - 0.20-0.41 mm
- limit - 0.41 mm
- second compression:
- LQ9, LQ4:
- nominal - 0.51-0.77 mm
- limit - 0.84 mm
- L59, LM7, LGM, LY5, LC9, L92:
- nominal - 0.44-0.70 mm
- limit - 0.76 mm
- L76, LY6:
- nominal - 0.37-0.69 mm
- limit - 0.69 mm
- oil scraper:
- LQ9, LQ4:
- nominal - 0.31-0.77 mm
- limit - 0.94 mm
- L59, LM7, LGM, LY5, LC9, L92:
- nominal - 0.18-0.75 mm
- limit - 0.81 mm
- L76, LY6:
- nominal - 0.22-0.79 mm
- limit - 0.79 mm
End clearance in the piston groove
- LQ9:
- the first compression - 0.04-0.08 mm
- second compression - 0.04-0.08 mm
- oil scraper - 0.012-0.2 mm
- LQ4:
- the first compression - 0.04-0.08 mm
- second compression - 0.04-0.08 mm
- oil scraper - 0.015-0.2 mm
- L59, LM7, LGM, LY5, LC9, L92:
- first compression - 0.04-0.085 mm
- second compression - 0.04-0.078 mm
- oil scraper - 0.012-0.2 mm
- L76, LY6:
- first compression - 0.03-0.10 mm
- second compression - 0.035-0.078 mm
- oil scraper - 0.013-0.2 mm
Valves
Valve face angle - 45°
Seat face angle - 46°
Locking chamfer width - 1.25 mm
Drive clearance - no, hydraulic pusher
Valve lift:
- release (without turning off the cylinders):
- L59, LM7 - 11.85mm
- LQ9, LQ4 - 12.16mm
- LGM, LY5, LC9 - 12.24mm
- L76 - 12.19 mm
- LY6 - 12.12 mm
- L92 - 12.72 mm
- release (with cylinder deactivation):
- LGM, LY5, LC9 - 12.46 mm
- L76 - 12.41 mm
- L92 - 12.94 mm
- inlet (without turning off the cylinders):
- L59, LM7 - 11.60mm
- LQ9, LQ4 - 11.79mm
- LGM, LY5, LC9 - 12.24mm
- L76 - 12.04mm
- LY6 - 11.83 mm
- L92 - 12.72 mm
- inlet (with cylinder deactivation):
- LGM, LY5, LC9 - 12.46 mm
- L76 - 12.24mm
- L92 - 12.94 mm
Valve seat and guide misalignment - 0.05 mm
Seat face width:
- release - 1.78 mm
- inlet - 1.02 mm
Valve stem diameter:
- nominal - 7.955-7.976 mm
- limit - 7.95 mm
Gap in guide (inlet and outlet):
- nominal - 0.025-0.066 mm
- limit - 0.093 mm
Rocker gear ratio - 1.70
Valve spring length:
- in the free state - 52.9 mm
- mounting - 45.75 mm
Spring force:
- up to length 45.75 mm - 340 N
- up to length 33.55 mm - 980 N
Lubrication system
Filling capacity:
- with filter - 5.7 l
- without filter - 5.2 l
Oil pressure (the engine is warm):
- at 1000 rpm - 41 kPa
- at 2000 rpm - 124 kPa
- at 4000 rpm - 165 kPa
Opening pressure of the pressure reducing valve of the cylinder deactivation system - 379-517 kPa
Oil pan
Retreat from front and back cover (measure from the plane of the pallet) - 0.0-0.5 mm
Deviation from the mounting surface of the flywheel housing - 0.0-0.1 mm